diff --git a/spring-boot-project/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc b/spring-boot-project/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc index 8051b11921..955a169ffc 100644 --- a/spring-boot-project/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc +++ b/spring-boot-project/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc @@ -1749,9 +1749,18 @@ factories with a metric named `rabbitmq`. [[production-ready-metrics-custom]] === Registering custom metrics -To register custom metrics, create a `MeterBinder` bean. By default, all `MeterBinder` -beans will be automatically applied to the micrometer `MeterRegistry.Config`. +To register custom metrics, inject `MeterRegistry` into your component, as shown in the +following example: + +[source,java,indent=0] +---- +include::{code-examples}/actuate/metrics/MetricsMeterRegistryInjectionExample.java[tag=component] +---- +If you find that you repeatedly instrument a suite of metrics across components or +applications, you may encapsulate this suite in a `MeterBinder` implementation. By +default, metrics from all `MeterBinder` beans will be automatically bound to +the Spring-managed `MeterRegistry`. [[production-ready-metrics-per-meter-properties]] diff --git a/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/actuate/metrics/MetricsMeterRegistryInjectionExample.java b/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/actuate/metrics/MetricsMeterRegistryInjectionExample.java new file mode 100644 index 0000000000..3f6975174a --- /dev/null +++ b/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/actuate/metrics/MetricsMeterRegistryInjectionExample.java @@ -0,0 +1,46 @@ +/* + * Copyright 2012-2018 the original author or authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.springframework.boot.docs.actuate.metrics; + +import java.util.List; +import java.util.concurrent.CopyOnWriteArrayList; + +import io.micrometer.core.instrument.MeterRegistry; +import io.micrometer.core.instrument.Tags; + +/** + * Example to show injection and use of a {@link MeterRegistry}. + * + * @author Andy Wilkinson + */ +public class MetricsMeterRegistryInjectionExample { + + // tag::component[] + class Dictionary { + + private final List words = new CopyOnWriteArrayList<>(); + + Dictionary(MeterRegistry registry) { + registry.gaugeCollectionSize("dictionary.size", Tags.empty(), this.words); + } + + // … + + } + // end::component[] + +}